package com.etc;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
import org.springframework.context.annotation.Bean;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.client.RestTemplate;

import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet;
@Transactional
@SpringBootApplication
@EnableDiscoveryClient
@EnableHystrix
@EnableHystrixDashboard
public class ServiceApplication {

	public static void main(String[] args) {
		SpringApplication.run(ServiceApplication.class, args);
	}
    /**
     * Spring提供的用于访问Rest服务的客户端
     * @return
     */
    @Bean
    @LoadBalanced
    RestTemplate restTemplate() {

        return new RestTemplate();
    }
	
	@Bean
    public ServletRegistrationBean getServlet(){
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/actuator/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }

}
